So just today my 1990 cougar xr7 has started to rev up from normal idle to 2500 to 3000 rpm when i put it in park. I also don"t have to give it any throttle from 0-35mph. Can anybody tell me what is wrong. I looked to see if the car has a TPS Sensor and when i looked up A TPS Sensor on the Auto zone and Advanced Auto Parts websites nothing came. Does that mean the car is drive by cable. Please let me know what is going on and how to fix it.